I pulled the ends out with pliers but had to heat up the tube to pull the fourth. Then I took some quick measurements of the tube.
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Simple enough to make so I got some 600 series ally and turned new tubes. Here is the end of my new tube compared to the old one. You can see where the end ball had sunk into the tube a bit
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The ends stalks are 4.68mm so I figured I would drill and ream 4.5mm and press them in. Here's a quick test fit.
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I made a quick jig to protect the ball, not that it needs it as it's hardened but you need to be sure. Pressed the ends in using my tailstock ram.
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Two new rods next to the old one.
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I checked the LH cylinder and those ones were still firmly fitted so I left them alone. I put the lot back together and set the clearances and it's now back to a satisfying rustle when running instead of a horrible rattle.
